Straight shelf



FIG. 1 is a top, front, right side perspective view of a straight shelfof the new design;

FIG. 2 is a front elevation view of thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures show portions of the straight shelfwhich form no part of the claimed design. Additional broken lines showenvironment and form no part of the claimed design.

CLAIM The ornamental design for a straight shelf, as shown anddescribed.